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How do lexical closures work?
... return func
flist.append(funcC(i))
for f in flist:
print f(2)
This is what happens when you mix side effects and functional programming.
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How to count TRUE values in a logical vector
...le(z)["TRUE"] # gives you 1
length(z[z == TRUE]) # f3lix answer, gives you 2 (because NA indexing returns values)
So I think the safest is to use na.rm = TRUE:
sum(z, na.rm = TRUE) # best way to count TRUE values
(which gives 1). I think that table solution is less efficient (look at the code o...
Flask SQLAlchemy query, specify column names
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You can use the with_entities() method to restrict which columns you'd like to return in the r...
Finding three elements in an array whose sum is closest to a given number
Given an array of integers, A 1 , A 2 , ..., A n , including negatives and positives, and another integer S. Now we need to find three different integers in the array, whose sum is closest to the given integer S. If there exists more than one solution, any of them is ok.
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How do I find the duplicates in a list and create another list with them?
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How to initialize/instantiate a custom UIView class with a XIB file in Swift
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270
I tested this code and it works great:
class MyClass: UIView {
class func instanc...
Mimicking sets in JavaScript?
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262
If you are programming in an ES6-capable environment (such as node.js, a specific browser with...
connecting to MySQL from the command line
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See here http://dev.mysql.com/doc/refman/5.0/en/connecting.html
mysql -u USERNAME -pPASSWORD -h...